Person recognition method and apparatus
a recognition method and person technology, applied in wave based measurement systems, navigation instruments, instruments, etc., can solve problems such as the accuracy of person recognition becoming wors
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first embodiment
[0062]In the case of NO in S23, the number N is incremented by one (S24), and the next registrant's personal data is read from the database (S3). In the case of YES in S23, on the other hand, the elapsed year calculator 35 calculates the number of elapsed years Y from the date of taking the face image of the personal data (S4). Since the following sequence is same as that of the first embodiment, description thereof will be omitted.
[0063]In this embodiment, the age of the person to be recognized is inputted in advance, for the purpose of excluding the comparison with the registrant who is much older or younger than the person to be recognized. Therefore, it is possible to shorten time required for the comparison.
third embodiment
[0064]In a third embodiment, the face images, the names and the ages of the top four registrants having the highest degree of resemblance are displayed on a transmissive LCD incorporated in eyeglasses 60. As shown in FIG. 5, a transparent glass 62 about one-third the size of an eyeglass frame 61 is fitted into the single eyeglass frame 61 on a right portion thereof. A transmissive LCD 63 about two-thirds the size of the eyeglass frame 61 is fitted into a remaining area of the eyeglass frame 61. The transmissive LCD 63 is transparent as with the transparent glass 62, when no image is displayed thereon.
[0065]A subminiature CCD camera (not illustrated) is embedded in the eyeglass frame 61, to capture a photographic image of a person 65 to be recognized. The photographic image is sent via a wireless communication system like Bluetooth to a terminal device such as a notebook computer put in a pocket of a jacket or a purse. Instead of the CCD camera, a CMOS camera with a CMOS image sensor...
second embodiment
[0075]In the second embodiment, the allowance value AV is set at five (years old), but may be another value such as three or seven. Instead of the above expression, the following expression may be used:
(A1−A2)2AV)2
[0076]The present invention is applicable to a door phone system. In this case, a person who is approaching a door is automatically detected and photographed, and the face image resemblant to the photographic image is chosen from the database to check who the person is.
[0077]According to the present invention, when the registrant's face image is old, his / her cognate's face image is used in the comparison. Thus, the person recognition apparatus can remind the user of the name of a friend, for example, who has visited the user for the first time in years.
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